... .Superior corrosion resistance 4.long life.Automatic Control Valves Water Softener Type choice:Softener equipment applies cation resin for ... time or flowWorking electric: 220V/50Hz Usage:System automatic water softener widely used in steam bioler,heating bioler,exchanger,air ... also used in hotel,restruant,office, and other life water treatment and food,drinking,wine,washing,textile,chemical,medicine and ...